Burner



FIG. 1 is a front, top, left perspective view of a burner showing our new design;

FIG. 2 is a front elevational view thereof, a rear elevational view thereof being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines in the drawing represent portions of the burner that form no part of the claimed design. 

CLAIM The ornamental design for a burner, as shown and described. 